XF Helmet
Characteristic:
Turn up the front cover for grinding, easy to use
High quality LCD and multilayer optical interference filter
Optical class 1/2/1/2
| XF220 | XF430 | XF820 | |
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| Optical Class | 1/2/1/2 | ||
| Filter Size | 110x90mm(4.33x3.54") | ||
| Viewing Area | 90x40mm(3.54x1.57") | 96x46mm(3.78x1.81") | 98x40mm(3.86x1.57") |
| Arc Sensor | 2 | ||
| Light State | 4 | ||
| Dark State | Variable Shade 9-13 | ||
| Shade Control | Internal | ||
| Power On/Off | Fully automatic | ||
| Sensitivity Control | Low-High,Internal Stepless | ||
| Switching Time | 1/5,000s | ||
| Delay Time | 0.2s | ||
| Grind | Turn up the front cover for grinding | ||
| Power Supply | Solar cell with lithium battery | ||
| UV/IR Protection | Up to shade 16 | ||
| Operating Temp. | -10°C+55°C(14°F ~ 131°F) | ||
| Storing Temp. | -20°C+70°C(- 4°F ~ 158°F) | ||